28" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 14 5/8"] w36h36 Its elegant look and fine

Its elegant look and fine finish and the natural warmth of oak wood

We carry sizes the big box stores don't

of up to 300m3/h

+ Product Details Size – 30"w X 28"h is the size for the duct opening measurement only

4" X 14" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

28" X 12" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 14 5/8"] w36h36 Its elegant look and fine+ Product Details Size 28"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 30 5 8" width X 14 5 8" height Actual Filter Size 27 3 4"w x 11 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.